Read Edit View history 膛线 tángxiàn rifling Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 膛线/膛線 · tángxiàn · rifling 2026/03/04 膛线 / 膛線 tángxiàn rifling helical grooves inside the barrel of a gun 这支步枪的膛线已经磨损了。 noun created sense Mar 4, 2026, 02:25 AM